The refrigeration machine operates in a reversible cycle consisting of two branches (figure): process I, in which entropy decreases with increasing temperature as a linear function of the square of the absolute temperature and polytrope II. The equation of state of the working substance is unknown. Determine the amount of heat taken from the refrigeration chamber with 1 kJ of work expended, if the ratio of the maximum and minimum absolute temperatures of the working substance in the cycle is a = 1.2.

Answer. Format gif